#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>

int main()
{
    //int kill(pid_t pid, int signum)
    //kill(getpid(), SIGQUIT);
    //raise(SIGTERM)
    //abort();  
    //alarm();   
    while(1)
    {
        printf("hello~~\n");
        sleep(1);
    }


    return 0;
}
